Die eigentümliche Einwirkung des Chrom-und Manganzusatzes auf das Kearosionsverhalten von Aluminium-Zink Magnesium-Legierungen höherer Festigkeit

勇, 五十嵐; 清一, 小玉

doi:10.2320/jinstmet1937.6.7_382

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2016

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“…For example, in the case of 7075 aluminum alloy, chromium is usually added to suppress stress corrosion cracking and grain coarsening during recrystallization. [6][7][8] Zirconium is also effective for suppressing the coarsening of recrystallized grains and is thus added to aluminum alloys. [9][10][11] Many reports have compared the effects of chromium and zirconium.…”

Section: Introductionmentioning

confidence: 99%

Improved Combination of Strength and Ductility in Zirconium-Added Al-Zn-Mg-Cu Alloy Processed with High-Pressure Torsion

et al. 2016

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To realize high-strength and high-ductility aluminum alloys, an Al-Zn-Mg-Cu-based alloy was produced by high-pressure torsion (HPT) processing. The chromium in the alloy was replaced with zirconium, and the iron content of the alloy was decreased to avoid ductility loss due to iron-containing intermetallic compounds formed during crystallization. The microstructures and mechanical properties of the processed alloy were investigated. The grains were elongated perpendicular to the rotation axis. The elongation of the alloy containing chromium decreased with increasing number of turns. In the case of the alloy in which chromium was replaced with zirconium, the strength increased with increasing number of turns, without reducing the elongation. The alloy exhibited an ultimate tensile strength of 929 MPa and an elongation of 6.4%.

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